Comparison
rTPU Flexible Black vs PA66
A side-by-side comparison of Recycled Thermoplastic Polyurethane Flexible Black and Polyamide 6,6 (Nylon).
Physical
Density
1.10-1.30 g/cm³
1.14 g/cm³
Water Absorption (24h)
0.5-1.5 %
1.2 %
Transparency
Opaque (typically black)
Opaque
Shrinkage
0.5-1.5 %
1.5 – 2.0 %
Mechanical
Young's Modulus
0.02-0.10 GPa
3.0 GPa (dry)
Tensile Strength
30-60 MPa
80 MPa
Elongation at Break
300-600 %
60 %
Impact Strength (Izod)
N/A (flexible grade)
50 J/m
Flexural Strength
—
110 MPa
Thermal
Glass Transition Temperature
-30 to -10 °C
70 °C
Melting Point
N/A (elastomeric)
255 – 265 °C
Continuous Service Temperature
70-90 °C
100 – 120 °C
Heat Deflection Temperature
N/A
75 °C (unfilled)
Electrical
Dielectric Constant
4.0-5.0
4.0
Volume Resistivity
10^10-10^12 Ohm·cm
10¹² Ω·cm
Dielectric Strength
10-20 kV/mm
—
Chemical resistance
Acids
Good resistance
Poor
Bases
Good resistance
Good
Solvents
Resistance varies, attacked by strong polar solvents
—
UV Resistance
Fair (can degrade over time)
Fair
Alcohols
—
Good
Oils & Fuels
—
Excellent
Sustainability
Recyclability
Recyclable (check local facilities)
Recyclable
Recycling Code
7 (Other)
7
Carbon Footprint
Lower than virgin TPU
~7.4 kg CO₂e / kg
Bio-based Content
—
0 – 100 % (bio grades)